diff --git a/tools/ndncatchunks3.cpp b/tools/ndncatchunks3.cpp
index f5a5964..b9a41d2 100644
--- a/tools/ndncatchunks3.cpp
+++ b/tools/ndncatchunks3.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2015 Regents of the University of California.
+ * Copyright (c) 2013-2016 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -200,5 +200,6 @@
 int
 main(int argc, char** argv)
 {
+  std::cerr << "ndncatchunks3 is deprecated. Use ndncatchunks program from ndn-tools repository.\n" << std::endl;
   return ndn::main(argc, argv);
 }
diff --git a/tools/ndnputchunks3.cpp b/tools/ndnputchunks3.cpp
index 6eea0b7..a977322 100644
--- a/tools/ndnputchunks3.cpp
+++ b/tools/ndnputchunks3.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2016 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -154,5 +154,6 @@
 int
 main(int argc, char** argv)
 {
+  std::cerr << "ndnputchunks3 is deprecated. Use ndnputchunks program from ndn-tools repository.\n" << std::endl;
   return ndn::main(argc, argv);
 }